KR20220090108A - Display device and manufacturting method for the same - Google Patents

Abstract

In the embodiments of the present invention, the touch sensor is disposed at a position corresponding to the display area on the upper surface, the gate signal generating circuit is disposed at a position corresponding to the non-display area, and the lower substrate and the lower side on which the first polarizer is disposed on the lower surface It is disposed to face the substrate, and includes an upper substrate having a second polarizing plate disposed on an upper surface and a color filter disposed on a lower surface thereof, wherein a first conductive film is disposed between the upper surface of the upper substrate and the second polarizing plate, and the first conductive film is a gate It is possible to provide a display device disposed not to overlap with a signal generating circuit, and a method for manufacturing the same.

Description

Display device and manufacturing method thereof

Embodiments of the present invention relate to a display device and a method for manufacturing the same.

As the information society develops, the demand for a display device for displaying an image is increasing in various forms. As the display device, various types of display devices such as a liquid crystal display device (LCD) and an electroluminescence display device (ELD) are used.

In addition, the electroluminescent display (ELD) includes a quantum dot light emitting display device including a quantum dot (QD), an inorganic light emitting display device, and an organic light emitting display device. It may include an organic light emitting display device and the like.

In addition, the display device senses a touch using a touch sensor and enables various operations to be performed in response to the sensed touch, thereby enabling a user to intuitively use the display device.

However, when distortion occurs in touch data corresponding to a touch sensed by the touch sensor, touch recognition failure may occur. Recently, the thickness of the display device is gradually getting thinner, and as the thickness of the display device becomes thinner, the touch recognition failure may be larger.

In addition, there may be a problem in that the manufacturing cost of the display device is increased due to the process of arranging the touch sensor on the display device.

SUMMARY Embodiments of the present invention provide a display device capable of suppressing touch recognition failure and a method of manufacturing the same.

Another aspect of the present invention is to provide a display device capable of reducing manufacturing cost and a manufacturing method thereof.

In one aspect, embodiments of the present invention include a touch sensor disposed at a position corresponding to the display area on the upper surface, a gate signal generating circuit disposed at a position corresponding to the non-display area, and a first polarizing plate disposed on the lower surface. A lower substrate and an upper substrate disposed to face the lower substrate, a second polarizing plate is disposed on an upper surface, and an upper substrate having a color filter disposed on a lower surface, wherein a first conductive film is disposed between the upper surface of the upper substrate and the second polarizing plate, The first conductive layer may provide a display device disposed so as not to overlap the gate signal generating circuit.

In another aspect, the embodiments of the present invention are divided into a display area and a non-display area, a lower substrate having a touch sensor disposed at a position corresponding to the display area on the upper surface and a first polarizing plate disposed on the lower surface, opposite to the lower substrate and a plurality of printed circuit films connected to an upper substrate and a lower substrate having a second polarizing plate disposed on the upper surface and a color filter disposed on the lower surface, each including a gate signal generating circuit, wherein the upper surface and the second polarizing plate of the upper substrate A display device in which a first conductive layer is formed between the two polarizing plates and the first conductive layer does not overlap the printed circuit film may be provided.

In another aspect, embodiments of the present invention provide a method of manufacturing a display device in which a lower substrate and an upper substrate are disposed to face each other, the steps of disposing a first conductive film on the upper surface of the upper substrate, a photo-photo process and etching on the first conductive film It is possible to provide a method of manufacturing a display device, which includes removing a portion of the first conductive film from the upper substrate by applying a process, disposing column spacers on the upper substrate, and disposing a color filter on the lower surface of the upper substrate. have.

According to embodiments of the present invention, it is possible to provide a display device capable of suppressing touch recognition failure and a manufacturing method thereof.

According to embodiments of the present invention, a display device capable of reducing manufacturing cost and a manufacturing method thereof can be provided.

1 is a structural diagram illustrating a display device according to embodiments of the present invention.
2 is a conceptual diagram illustrating a display panel in a display device according to embodiments of the present invention.
3 is a cross-sectional view illustrating a first embodiment of a cross-section taken along line I-I' of the display device shown in FIG. 2 .
FIG. 4 is a cross-sectional view illustrating a second embodiment of a cross-section taken along line I-I' of the display device shown in FIG. 1. Referring to FIG.
5A to 5C are cross-sectional views illustrating an arrangement of a conductive layer in a display device according to an exemplary embodiment of the present invention.
6A to 6D are plan views illustrating that the lower substrate and the first conductive layer are disposed to overlap each other.
FIG. 7 is a first embodiment schematically illustrating a cross-section of the display device shown in FIG. 6A along line II-II'.
8 is a plan view illustrating a second embodiment of a display device according to embodiments of the present invention.
9 is a plan view illustrating that a conductive tape is attached to the display device shown in FIG. 8 to test distortion of touch data.
10 is a flowchart illustrating a method of manufacturing a display device according to embodiments of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to components of each drawing, the same components may have the same reference numerals as much as possible even though they are indicated in different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description may be omitted. When "includes", "having", "consisting of", etc. mentioned in this specification are used, other parts may be added unless "only" is used. When a component is expressed in the singular, it may include a case in which the plural is included unless otherwise explicitly stated.

In addition, in describing the components of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, order, or number of the elements are not limited by the terms.

In the description of the positional relationship of the components, when it is described that two or more components are "connected", "coupled" or "connected", two or more components are directly "connected", "coupled" or "connected" ", but it will be understood that two or more components and other components may be further "interposed" and "connected," "coupled," or "connected." Here, other components may be included in one or more of two or more components that are “connected”, “coupled” or “connected” to each other.

In the description of the temporal flow relationship related to the components, the operation method or the production method, for example, the temporal precedence relationship such as "after", "after", "after", "before", etc. Alternatively, when a flow precedence relationship is described, it may include a case where it is not continuous unless "immediately" or "directly" is used.

On the other hand, when numerical values or corresponding information (eg, level, etc.) for a component are mentioned, even if there is no separate explicit description, the numerical value or the corresponding information is based on various factors (eg, process factors, internal or external shock, Noise, etc.) may be interpreted as including an error range that may occur.

1 is a structural diagram illustrating a display device according to embodiments of the present invention.

Referring to FIG. 1 , the display device 100 may include a display panel 110 , a data driver circuit 120 , a gate driver circuit 130 , and a timing controller 140 .

The display panel 110 may include a plurality of pixels 101 arranged in a matrix form. The plurality of pixels 101 may emit red, green, and blue light, respectively. However, the color of light emitted from each pixel is not limited thereto. Also, the display panel 110 may have a rectangular shape. The pixel 101 may include a plurality of transistors.

A plurality of gate lines GL1 to GLn and a plurality of data lines DL1 to DLm are disposed in the display panel 110 , and a plurality of pixels 101 are disposed on the gate lines GL1 to GLn and the data lines DL1 to DLm. ) can be connected. Each pixel 101 may receive a data signal transmitted through the data lines DL1 through DLm in response to the gate signal transmitted through the gate lines GL1 through GLn. However, the wirings disposed on the display panel 110 are not limited thereto.

The data driver circuit 120 may be connected to the plurality of data lines DL1 to DLm to transmit a data signal to the pixel 101 through the data lines DL1 to DLm. Here, the data driver circuit 120 is illustrated as one individual, but is not limited thereto.

The gate driver circuit 130 is connected to the gate lines GL1 to GLn and may supply a gate signal to the plurality of pixels 101 through the gate lines GL1 to GLn. Here, the gate driver circuit 130 is illustrated as being disposed on one side of the display panel 110 , but is not limited thereto, and may be disposed on both sides of the display panel 110 . In addition, one gate driver circuit may be connected to the odd-numbered gate line and the other gate driver circuit may be connected to the even-numbered gate line. In addition, the display device 100 does not include a separate gate driver circuit, and a gate signal generator circuit for generating a gate signal may be disposed on the display panel 110 .

The timing controller 140 may control the data driver circuit 120 and the gate driver circuit 130 . The timing controller 140 may supply the image signal RGB and the data control signal DCS to the data driver circuit 120 and supply the gate control signal GCS to the gate driver circuit 130 .

2 is a conceptual diagram illustrating a display panel in a display device according to embodiments of the present invention.

Referring to FIG. 2 , the display device 100 may include a display panel 110 and a gate signal generating circuit 130a disposed on the display panel 110 . The gate signal generating circuit 130a is disposed on both sides of the display panel 110 and may supply gate signals from both sides of the plurality of gate lines GL1 to GLn shown in FIG. 1 . The gate signal generating circuit 130a may be disposed together while the pixel 101 is disposed on the display panel 110 .

3 is a cross-sectional view illustrating a first embodiment of a cross-section taken along line I-I' of the display device shown in FIG. 2 .

Referring to FIG. 3 , the display device 100 may include a lower substrate 110a and an upper substrate 110b. Also, the display device 100 may be divided into a display area 111 and a non-display area 112 .

The plurality of gate lines GL1 to GLn and the plurality of data lines DL1 to DLm shown in FIG. 1 are disposed on the lower substrate 110a, and are disposed on the gate lines GL1 to GLn and the data lines DL1 to DLm. A plurality of connected pixels 101 may be disposed. A color filter may be disposed on the upper substrate 110b.

A column spacer 310 may be disposed between the lower substrate 110a and the upper substrate 110b, and a distance between the lower substrate 110a and the upper substrate 110b may be maintained by the column spacer 310 . The column spacer 310 may function as a sealant to confine the liquid crystal 330 to be described later between the lower substrate 110a and the upper substrate 110b. In addition, a black spacer 320 may be further disposed on the upper substrate 110b at a position corresponding to the non-display area 112 .

The black spacer 320 may be disposed along the edge of the upper substrate 110b to block light from being transmitted to the edge of the upper substrate 110b. The black spacer 320 may be disposed at a position overlapping the column spacer 310 . When the black spacer 320 is disposed, a black matrix may be disposed in the display area 111 of the upper substrate 110b.

Also, a liquid crystal 330 may be disposed between the lower substrate 110a and the upper substrate 110b. When an electric field is applied to the liquid crystal 330 , the molecular arrangement of the liquid crystal 330 may be determined. In addition, the polarization direction of the light passing through the liquid crystal 330 may be determined according to the molecular arrangement of the liquid crystal 330 .

The touch sensor 340 may be disposed on the lower substrate 110a at a position corresponding to the display area 111 , and the gate signal generating circuit 130a may be disposed at a position corresponding to the non-display area 112 . Alternatively, a printed circuit film (not shown) on which the gate signal generating circuit 130a is disposed may be connected to the lower substrate 110a.

A first polarizing plate 350a may be disposed on a lower surface of the lower substrate 110a, and a second polarizing plate 350b may be disposed on an upper surface of the upper substrate 110b. Light traveling from the lower substrate 110a to the upper substrate 110b may be blocked or transmitted by the first polarizing plate 350a and the second polarizing plate 350b.

In addition, the first conductive layer 360a may be disposed between the upper surface of the upper substrate 110b and the second polarizing plate 350b. The first conductive layer 360a may serve to prevent static electricity. The first conductive film 360a forms a capacitance with the touch sensor 340 disposed on the lower substrate 110a and responds to a change in capacitance formed between the first conductive film 360a and the touch sensor 340 . Thus, the touch can be detected.

In order to discharge a voltage formed by static electricity in the first conductive film 360a or to allow the first conductive film 360a to be used by the touch sensor 340 to sense a touch, the first conductive film 360a may be connected to the ground GND. A ground wiring (not shown) may be formed on the edge of the lower substrate 110a, and the first conductive film 360a may be connected to the ground wiring disposed on the lower substrate 110a through a conductive ball (not shown).

In addition, when the resistance of the first conductive film 360a is less than 10 ⁶ Ω, the touch sensitivity of the touch sensor is lowered, and when the resistance of the first conductive film 360a is greater than 10 ⁹ Ω, it is impossible to prevent static electricity. can occur Accordingly, the first conductive layer 360a may have a resistance value of 10 ⁶ to 10 ⁹ Ω. However, the resistance value of the first conductive layer 360a is not limited thereto.

The first conductive layer 360a may be an oxide layer. In addition, the first conductive layer 360a may be formed by implanting tin oxide (SnO2) or zirconium oxide (ZrO2) as a dopant based on transparent indium tin oxide (ITO). However, the method of manufacturing the first conductive layer 360a is not limited thereto. Also, the first conductive layer 360a may include silicon (Si), indium (In), tin (Sn), and oxygen (O).

In addition, composition ratios of silicon (Si), indium (In), tin (Sn), and oxygen (O) included in the first conductive layer 360a may be as shown in Table 1 below.

Si In Sn O One 7.62 (%) 12.75 (%) 18.95 (%) 60.68 (%) 2 7.77 (%) 11.29 (%) 18.34 (%) 62.59 (%) 3 7.02 (%) 10.97 (%) 20.38 (%) 61.64 (%) 4 8.28 (%) 11.85 (%) 20.18 (%) 59.69 (%)

The first conductive layer 360a disposed as described above may be coupled to the gate signal generating circuit 130a overlapping the non-display area 112 to form a coupling capacitor Cc. In the non-display area 112 of the touch sensors 340 disposed outside the display area 111 by the coupling capacitor Cc formed between the first conductive layer 360a and the gate signal generating circuit 130a Touch data corresponding to a touch sensed by the adjacent touch sensors 341 may be distorted.

In addition, the first conductive film 360a, which is a high-resistance oxide film, may be deposited and formed on the upper substrate 110b during the manufacturing process of the display device, so that it may be disposed on the upper substrate 110b without being supplied as a separate product. can In addition, since the high resistance oxide film is used, the second polarizing plate 350b does not need to have a high resistance, and thus the second polarizing plate 350b disposed on the first conductive film 360a may be configured as a general polarizing plate. However, when the second polarizing plate 350b is a polarizing plate having a high resistance, it must be supplied as a separate product, and the manufacturing cost is generally higher than that of the polarizing plate.

For the above reasons, by disposing the first conductive film 360a, which is an oxide film, and the second polarizing plate 350b having no high resistance thereon, the manufacturing cost of the display device including the touch sensor can be reduced.

FIG. 4 is a cross-sectional view illustrating a second embodiment of a cross-section taken along line I-I' of the display device shown in FIG. 1. Referring to FIG.

Referring to FIG. 4 , the display device 100 may include a lower substrate 110a and an upper substrate 110b. Also, the display device 100 may be divided into a display area 111 and a non-display area 112 .

The plurality of gate lines GL1 to GLn and the plurality of data lines DL1 to DLm shown in FIG. 1 are disposed on the lower substrate 110a, and are disposed on the gate lines GL1 to GLn and the data lines DL1 to DLm. A plurality of pixels 101 may be connected. A color filter may be disposed on the upper substrate 110b.

A column spacer 310 may be disposed between the lower substrate 110a and the upper substrate 110b, and a distance between the lower substrate 110a and the upper substrate 110b may be maintained by the column spacer 310 . The column spacer 310 may function as a sealant to confine the liquid crystal 330 between the lower substrate 110a and the upper substrate 110b. In addition, a black spacer 320 may be further disposed on the upper substrate 110b at a position corresponding to the non-display area 112 .

The black spacer 320 may be disposed along the edge of the upper substrate 110b to block light transmitted through the edge of the upper substrate 110b. The black spacer 320 may be disposed at a position overlapping the column spacer 310 . When the black spacer 320 is disposed, a black matrix may be disposed in the display area 111 of the upper substrate 110b.

Also, a liquid crystal 330 may be disposed between the lower substrate 110a and the upper substrate 110b. When an electric field is applied to the liquid crystal 330 , the molecular arrangement of the liquid crystal 330 may be determined. In addition, the polarization direction of the light passing through the liquid crystal 330 may be determined according to the molecular arrangement of the liquid crystal 330 .

The touch sensor 340 may be disposed on the lower substrate 110a at a position corresponding to the display area 111 , and the gate signal generating circuit 130a may be disposed at a position corresponding to the non-display area 112 . A pixel electrode and a common electrode for applying an electric field to the liquid crystal may be disposed on the lower substrate 110a. The common electrode may be included in the touch sensor 340 . The display device 100 may be divided into a display period and a touch sensing period, a common voltage may be supplied to the touch sensor 340 during the display period, and a touch driving signal may be supplied to the touch sensor 340 during the touch sensing period. .

A first polarizing plate 350a may be disposed on a lower surface of the lower substrate 110a, and a second polarizing plate 350b may be disposed on an upper surface of the upper substrate 110b. The first polarizing plate 350a and the second polarizing plate 350b may block or transmit light traveling from the lower substrate 110a to the upper substrate 110b in response to the molecular arrangement of the liquid crystal 330 .

In addition, a first conductive layer 360b may be disposed between the upper surface of the upper substrate 110b and the second polarizing plate 350b. The first conductive layer 360b may serve to prevent static electricity. The first conductive film 360b has a capacitance formed with the touch sensor 340 disposed on the lower substrate 110a , and corresponds to a change in capacitance formed between the first conductive film 360a and the touch sensor 340 . Thus, a touch may be detected by the touch sensor 340 .

In order to discharge a voltage formed by static electricity in the first conductive film 360b or to allow the first conductive film 360a to be used by the touch sensor 340 to sense a touch, the first conductive film 360b may be connected to the ground GND. A ground wiring (not shown) is formed on the edge of the lower substrate 110a , and the first conductive film 360a may be connected to the ground wiring disposed on the lower substrate 110a through the conductive ball 601 .

In addition, when the resistance of the first conductive film 360a is less than 10 ⁶ Ω, the touch sensitivity of the touch sensor is lowered, and when the resistance of the first conductive film 360a is greater than 10 ⁹ Ω, it is impossible to prevent static electricity. can occur Accordingly, the first conductive layer 360a may have a resistance value of 10 ⁶ to 10 ⁹ Ω. However, the resistance value of the first conductive layer 360a is not limited thereto.

Since the first conductive film 360b may be an oxide film, the manufacturing cost of the display device 100 in which the first conductive film 360b is formed on the upper surface of the upper substrate 110b may be reduced. In addition, the first conductive layer 360b may be formed by implanting tin oxide (SnO2) or zirconium oxide (ZrO2) as a dopant based on transparent indium tin oxide (ITO). However, the method of manufacturing the first conductive layer 360a is not limited thereto. Also, the first conductive layer 360b may include silicon (Si), indium (In), tin (Sn), and oxygen (O).

Also, the first conductive layer 360b disposed on the upper substrate 110b may be disposed so as not to overlap the non-display area 112 . When the first conductive film 360b is coupled to the gate signal generating circuit 130a, a capacitance is formed between the first conductive film 360b and the gate signal generating circuit 130a, and the formed capacitance is the touch sensor ( In 340), the touch data may be distorted in the touch sensor 341 disposed at a position adjacent to the edge of the non-display area 112 . However, since the first conductive layer 360b does not overlap the gate signal generation circuit 130a , the first conductive layer 360b is not coupled to the gate signal generation circuit 130a, so that the non-display area 112 is not formed. The occurrence of distortion in the touch data sensed by the touch sensor 341 disposed at a position adjacent to the edge may be suppressed.

When the first conductive layer 360b is disposed so as not to overlap the gate signal generation circuit 130a, the first conductive layer 360b may not be coupled to the gate signal generation circuit 130a.

5A to 5C are cross-sectional views illustrating an arrangement of a conductive layer in a display device according to an exemplary embodiment of the present invention. Here, although it is shown that the lower substrate 110a and the upper substrate 110b are attached, this is for explanation only, and a certain distance is maintained between the lower substrate 110a and the upper substrate 110b, and the lower substrate 110a and A liquid crystal 330 may be disposed between the upper substrate 110b.

Referring to FIG. 5A , the display device 100 may be disposed such that a lower substrate 110a and an upper substrate 110b face each other. In addition, a first conductive layer 360b may be disposed on the upper substrate 110b. Also, the first conductive layer 360b may be disposed to overlap the display area 111 . Accordingly, the first conductive layer 360b is disposed at a position that does not overlap the non-display area 112 , and the gate signal generating circuit 130a disposed in the non-display area 112 is formed between the first conductive layer 360b and the first conductive layer 360b. may not overlap.

Referring to FIG. 5B , the first conductive layer 360b is disposed at a position that does not overlap the non-display area 112 , and the gate signal generating circuit 130a disposed in the non-display area 112 is the first conductive layer. Although not overlapping with 360b , the second conductive layer 361b may be disposed at a position overlapping with the non-display area 112 . The second conductive layer 361b may be thinner than the first conductive layer 360b.

When the thickness of the second conductive layer 361b is thinner than that of the first conductive layer 360b, the resistance value of the second conductive layer 361b may be greater than the resistance value of the first conductive layer 360b. When the resistance of the second conductive layer 361b is large, the size of the coupling capacitor may be small between the second conductive layer 361b and the gate signal generator circuit 130a disposed in the non-display area 112 . , the touch data may not be greatly distorted in the touch sensor 341 disposed adjacent to the non-display area 112 .

Referring to FIG. 5C , the first conductive layer 360b is disposed at a position that does not overlap the non-display area 112 , and the gate signal generating circuit 130a disposed in the non-display area 112 is the first conductive layer. Although not overlapping with 360b , the second conductive layer 361b may be disposed at a position overlapping with the non-display area 112 . The second conductive layer 361b may be thicker than the first conductive layer 360b.

The thickness of the second conductive layer 361b is greater than that of the first conductive layer 360b, and the resistance value of the second conductive layer 361b is smaller than the resistance value of the first conductive layer 360b. The touch sensor 341 disposed adjacent to 361b and the non-display area 112 may not perform a touch operation. That is, the distortion of the touch sensor 341 by the second conductive film 361b is reduced.

5B and 5C, the first conductive film 360b and the second conductive film 361b are described as being disposed on the upper substrate 110b, but the present invention is not limited thereto, and the upper substrate 110b is not limited thereto. A single conductive layer is disposed on the surface, and a portion of the one conductive layer having one thickness may be referred to as a first conductive layer 360b, and a portion having a different thickness may be referred to as a second conductive layer 361b. In addition, although the first conductive layer 360b and the second conductive layer 361b have been described as having different thicknesses, the present invention is not limited thereto, and the first conductive layer 360b and the second conductive layer 361b have different thicknesses. The parts may have the same thickness but different resistance values. In this case, the resistance values of the first conductive layer 360b and the second conductive layer 361b may be different by adjusting the concentration of the dopant included in each of the first conductive layer 360b and the second conductive layer 361b. have.

6A to 6E are plan views illustrating that the lower substrate and the first conductive layer are disposed to overlap each other.

6A to 6E , in the display panel 110 , the display area 111 may be disposed at the center, and the non-display area 112 shown in FIG. 4 may be disposed on the edge of the display area 111 . The non-display area 112 may include first to fourth non-display areas 112a, 112b, 112c, and 112d respectively disposed at positions overlapping the left, right, lower, and upper sides of the display panel 110 . . In addition, a first conductive layer 360b may be disposed in the display area 111 .

In addition, as shown in FIG. 6A , the first conductive layer 360b is not disposed in the first to fourth non-display areas 112a, 112b, and 112c among the non-display areas 112 shown in FIG. 4 . it may not be In addition, the first conductive layer 360b may be disposed on a part of the fourth non-display area 112d of the non-display area 112 illustrated in FIG. 4 .

More specifically, the first to fourth non-display areas 112a, 112b, 112c, and 112d may be disposed in one area of the left side, the right side, the lower side, and the upper side of the lower substrate 110a shown in FIG. 4 . In addition, the first conductive layer 360b may not be disposed in a position overlapping the first to third non-display areas 112a , 112b , and 112c in the upper substrate 110b illustrated in FIG. 4 . In addition, the first conductive layer 360b may be disposed at a position overlapping the fourth non-display area 112d on the upper substrate 110b at a predetermined interval.

In addition, the gate signal generating circuit 130a disposed at positions corresponding to the first and second non-display areas 112a and 112b in the lower substrate 110a may be disposed not to overlap the first conductive layer 360b. can In addition, a plurality of first printed circuit films 120a may be disposed at positions overlapping the fourth non-display area 112d. The plurality of first printed circuit films 120a may be disposed to partially overlap the first conductive layer 360b disposed in the fourth non-display area 112d.

In addition, the conductive ball 601 may be connected to the first conductive layer 360b. The conductive ball 601 may include silver.

Also, as illustrated in FIG. 6B , the first conductive layer 360b may not be disposed in the first to fourth non-display areas 112a, 112b, 112c, and 112d of the non-display area 112 . In addition, the first conductive layer 360b may be disposed at each of the four corners of the display area 111 and the non-display area 112 .

In addition, the gate signal generating circuit 130a is disposed at positions corresponding to the first and second non-display regions 112a and 112b so that the gate signal generating circuit 130a does not overlap the first conductive layer 360b. can be placed. In addition, a plurality of first printed circuit films 120a may be disposed at positions overlapping the third and fourth non-display areas 112c and 112d.

As shown in FIG. 6C , the first conductive layer 360b is formed on a portion of the first to fourth non-display areas 112a , 112b , 112c and 112d among the non-display area 112 . ) may not be placed. In addition, a first conductive layer 360b may be disposed on at least two corners of the non-display area 112 , respectively.

In addition, the gate signal generating circuit 130a may be disposed at positions corresponding to the first and second non-display areas 112a and 112b. In addition, a portion of the gate signal generating circuit 130a may be disposed so as not to overlap the first conductive layer 360b. In addition, a plurality of first printed circuit films 120a may be disposed at positions overlapping the third and fourth non-display areas 112c and 112d. The plurality of first printed circuit films 120a may be disposed to correspond to positions where the first conductive films 360b remain in the third and fourth non-display areas 112c and 112d.

In addition, the conductive ball 601 may be connected to the first conductive film 360b disposed at at least two corners.

In addition, as shown in FIG. 6D , the first conductive film 360b is formed in the first to fourth non-display regions 112a, 112b, 112c, and 112d among the non-display regions 112 . ) may not be placed. In addition, a first conductive layer 360b may be disposed on at least two corners of the non-display area 112 , respectively.

In addition, the gate signal generating circuit 130a may be disposed at a position corresponding to the first and second non-display regions 112a and 112b so that the gate signal generating circuit 130a does not overlap the first conductive layer 360b. can be placed inconsistently. In addition, a plurality of first printed circuit films 120a may be disposed at positions overlapping the third and fourth non-display areas 112c and 112d.

In addition, the conductive ball 601 may be connected to the first conductive film 360b disposed at at least two corners.

In addition, a drive circuit may be disposed on each of the first printed circuit films 120a. The driver circuit disposed on the first printed circuit film 120a may be an integrated circuit. The driver circuits respectively disposed on the plurality of first printed circuit films 120a may correspond to the data driver circuit 120 illustrated in FIG. 1 . In addition, the conductive ball 601 may include silver.

Also, as shown in FIG. 6E , the first conductive layer 360b is formed on a portion of the first to fourth non-display areas 112a, 112b, 112c, and 112d among the non-display area 112 . 360b may not be placed. In addition, a first conductive layer 360b may be disposed on at least two corners of the non-display area 112 , respectively.

In addition, a plurality of second printed circuit films 130b having a gate signal generating circuit disposed therein may be disposed at positions corresponding to the first and second non-display areas 112a and 112b so that the gate signal generating circuit is disposed. The plurality of second printed circuit films 130b may be disposed to overlap the first conductive film 360b. In addition, a plurality of first printed circuit films 120a may be disposed at positions overlapping the third and fourth non-display areas 112c and 112d. A driver circuit may be disposed on the plurality of first printed circuit films 120a. The plurality of first printed circuit films 120a and the driver circuits disposed on each of the first printed circuit films 120a may correspond to the data driver circuit 120 shown in FIG. 1 , and the plurality of second printed circuit films ( 130b) and the gate signal generating circuit disposed on each of the second printed circuit films 130b may correspond to the gate driver circuit 130 shown in FIG. 1 .

FIG. 7 is a first embodiment schematically illustrating a cross-section of the display device shown in FIG. 6A along line II-II'.

Referring to FIG. 7 , a first polarizing plate 350a may be disposed on a lower surface of the lower substrate 110a, and a power wiring 701 may be disposed on one side of an upper portion of the lower substrate 110a. The power wiring 701 may be connected to the ground. However, the connection to the power wiring 701 is not limited thereto. An upper substrate 110b may be disposed on the upper surface of the lower substrate 110a. In addition, a first conductive layer 360b may be disposed on the upper surface of the upper substrate 110b. In addition, the second polarizing plate 350b may be disposed on the first conductive layer 360b. In addition, the power wiring 701 and the first conductive film 360b may be connected to the conductive ball 601 . Accordingly, the ground may be connected to the first conductive layer 360b.

8 is a plan view showing a second embodiment of a display device according to embodiments of the present invention, and FIG. 9 is a plan view showing a conductive tape attached to the display device shown in FIG. 8 to test distortion of touch data. to be.

Referring to FIG. 8 , the display device 100 may include a display panel 110 and a second printed circuit film 130b disposed on left and right sides of the display panel 110 . The display area 111 may be positioned at the center of the display panel 110 , and the non-display area 112 may be disposed on the edge of the display area 111 . The display area 111 is an area in which pixels are disposed to display an image, and the non-display area 112 may include wirings for supplying signals and/or voltages to the pixels. However, the arrangement in the non-display area 112 is not limited thereto.

In addition, a gate signal generating circuit 131 may be disposed on each of the second printed circuit films 130b. The gate signal generating circuit 131 may be an integrated circuit.

In addition, the black spacer 130 may be disposed at a position overlapping the non-display area 112 .

In the display device 100 implemented as described above, as shown in FIG. 9 , a conductive tape was attached to each of three places of the display device 100 . A first conductive tape 901 that is attached between the second printed circuit films 130b and extended to the display area 111 is attached between the second printed circuit film 130b and the black spacer 320, and the second printed circuit film 130b and the black spacer 320 are attached. A second conductive tape 902 extending to the display area 111 is attached between the second printed circuit film 130b and the black spacer 320 at a position parallel to the circuit film 130b, and the display is displayed on the black spacer 320 . A third conductive tape 903 extending to the region 111 may be attached.

Then, the distortion of the touch data was measured in the display device 100 . At a position corresponding to the position where the first conductive tape 901 is attached, the touch data sensed by the touch sensor disposed adjacent to the non-display area 112 is distorted, and the second conductive tape 902 is attached thereto. No distortion was observed in the touch data sensed by the touch sensor 340 corresponding to the position and the position to which the third conductive tape 903 was attached.

That is, when a conductive film is disposed between the second printed circuit films 130b and adjacent to the second printed circuit film 130b, it can be seen that distortion appears in the touch data.

In order to prevent distortion of the touch data, the first conductive film 360b may not be disposed between the second printed circuit films 130b in the display panel 110 as shown in FIG. 6E .

10 is a flowchart illustrating a method of manufacturing a display device according to embodiments of the present invention.

Referring to FIG. 10 , the display device 100 may include a lower substrate 110a and an upper substrate 110b. A touch sensor 340 may be disposed on the lower substrate 110a. In addition, a gate signal generating circuit 130a may be disposed on the lower substrate 110a. In addition, a plurality of first printed circuit films 130b may be disposed on the lower substrate 110a. A gate signal generating circuit may be disposed on each of the plurality of first printed circuit films 130b.

A first conductive layer may be formed on the upper surface of the upper substrate 110b ( S1000 ). The first conductive layer 360b may have a resistance value of 10 ⁶ to 10 ⁸ Ω. However, the present invention is not limited thereto. The first conductive layer 360b may include an oxide layer and may be formed by implanting tin oxide (SnO2) or zirconium oxide (ZrO2) as a dopant into transparent indium tin oxide (ITO). However, the method of manufacturing the first conductive layer 360b is not limited thereto. Also, the first conductive layer 360b may include silicon (Si), indium (In), tin (Sn), and oxygen (O). When the first conductive layer 360b includes an oxide layer, the manufacturing cost of the first conductive layer 360b may be reduced.

A portion of the first conductive film 360b may be removed from the upper substrate 110b. (S1100) The first conductive film 360b may be removed from the upper substrate 110b by applying a photo-photo process and an etching process. have. A portion from which the first conductive film 360b is to be removed is set on the upper substrate 110b by a photo-photo process, and a part of the first conductive film 360b may be removed from the upper substrate 110b by an etching process. . The etching process may be either wet etching or dry etching. In addition, the display device 100 may be divided into a display area 111 and a non-display area 112 , and the first conductive film 360b is left on the display area 111 and the first conductive layer 360b is left on the non-display area 112 . The conductive layer 360b may be removed. In addition, a portion of the first conductive layer 360b may be removed from the non-display area 111 , and the first conductive layer 360b may not overlap the gate signal generating circuit 130a disposed on the lower substrate 110b. This can be removed.

In addition, a second conductive layer 361b having a thickness different from that of the first conductive layer 360b disposed on the display area 111 may be disposed on the non-display area 112 by a photo-photo process and an etching process. . The second conductive layer 361b may have a thickness different from that of the first conductive layer 360b disposed in the display area 111 among the first conductive layers 360b. The second conductive layer 361b may be thinner or thicker than the thickness of the first conductive layer 360b.

Since the first conductive layer 360b and the second conductive layer 361b have different thicknesses, the resistance of the first conductive layer 360b and the second conductive layer 361b may be different. When the thickness of the first conductive layer 360b is greater than the thickness of the second conductive layer 361b, the resistance value of the first conductive layer is smaller than the resistance value of the second conductive layer 361b and the thickness of the first conductive layer 360b If is thinner than the thickness of the second conductive layer 361b, the resistance value of the first conductive layer 360b may be greater than the resistance value of the second conductive layer 361b. Also, although the thickness of the first conductive layer 360b and the second conductive layer 361b is the same, resistance values may be different.

When the thickness of the second conductive layer 361b is thinner than that of the first conductive layer 360b, the resistance of the second conductive layer 361b may be greater than that of the first conductive layer 360b. When the resistance of the second conductive layer 361b is greater than the resistance of the first conductive layer 360b, even if the second conductive layer 361b and the gate signal generating circuit 130a overlap each other, the second conductive layer 361b and A small coupling capacitor Cc may be formed between the gate signal generating circuits 130a. Since the coupling capacitor Cc is formed to be small, distortion of touch data sensed by the touch sensor 341 disposed adjacent to the non-display area 112 of the touch sensor 340 may be reduced. Also, when the thickness of the second conductive layer 361b is greater than the thickness of the first conductive layer 360b, the resistance of the second conductive layer 361b may be smaller than the resistance of the first conductive layer 360b. When the resistance of the second conductive layer 361b is smaller than the resistance of the first conductive layer 360b, the touch sensor 341 disposed adjacent to the second conductive layer 361b may not sense a touch. . Accordingly, by preventing the touch data sensed by the touch sensor from being distorted, the touch sensor detecting the touch may perform an accurate operation.

Also, a column spacer 310 may be disposed on the upper substrate 110b. (S1200) The column spacer may be disposed after the black spacer 320 is disposed on the non-display area 112 . When the black spacer 320 is disposed, a black matrix may be disposed in the display area 111 . The column spacer 310 may maintain a distance between the lower substrate 110b and the upper substrate 110a. In addition, the black spacer 320 may blacken the edge of the display area 111 , thereby preventing light from being transmitted in the non-display area 112 .

A color filter may be disposed on the lower surface of the upper substrate 110b. (S1300) However, the present invention is not limited thereto, and a color filter may be disposed on the upper surface of the upper substrate 110b.

In addition, the upper substrate 110b may be disposed on the lower substrate 110a. A constant distance may be maintained between the lower substrate 110a and the upper substrate 110b by the column spacer 320 . The gate signal generating circuit 130a may be disposed on the lower substrate 110a at a position overlapping the non-display area 112 . In addition, the power wiring 701 is disposed on the lower substrate 110a, and the first conductive film 360b disposed on the upper substrate 110b may be connected to the power wiring 701 by the conductive ball 601. have. A ground may be transmitted to the power wiring 701 and a ground GND may be transmitted to the first conductive film 360b.

In addition, the liquid crystal 330 may be injected between the lower substrate 110a and the upper substrate 110b. A constant distance may be maintained between the lower substrate 110a and the upper substrate 110b by the column spacer 310 .

The display device 100 implemented as described above can prevent the coupling capacitor Cc formed by coupling between the first conductive layer 360b and the gate signal generating circuit 130a from being formed. When the coupling capacitor Cc is not formed or the size is small, the touch data detected by the touch by the touch sensor 341 disposed outside the display area 111 among the plurality of touch sensors 340 is distorted. less likely to occur.

In addition, a plurality of first printed circuit films 120a may be disposed on the lower substrate 110a , and the first conductive film 360b disposed on the upper substrate 110b may be disposed in the non-display area 112 . 1 It may be disposed so as not to overlap the region between the printed circuit films (120a).

In addition, the gate signal generating circuit 130a may not be disposed on the lower substrate 110a , but a plurality of second printed circuit films 130b having a gate driver circuit disposed thereon may be disposed on the lower substrate 110a.

Even when the plurality of second printed circuit films 130b are disposed on the lower substrate 110a, the first conductive film 360b is not disposed between the second printed circuit films 130b, so that the first conductive film 360b ) and the second printed circuit film 130b may cause the coupling capacitor Cc to be formed. Accordingly, it is possible to suppress the occurrence of distortion in touch data in the touch sensor 341 disposed adjacent to the non-display area 112 among the plurality of touch sensors 340 .

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. In addition, since the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: display device
101: pixel
110: display panel
120: data driver circuit
130: gate driver circuit
140: timing controller

Claims (20)

a lower substrate having a touch sensor disposed at a position corresponding to the display area on the upper surface, a gate signal generating circuit disposed at a position corresponding to the non-display area, and a first polarizing plate disposed on the lower surface; and
It is disposed to face the lower substrate, and includes an upper substrate on which a second polarizing plate is disposed on an upper surface and a color filter is disposed on a lower surface thereof,
A first conductive layer is disposed between the upper surface of the upper substrate and the second polarizing plate, and the first conductive layer is disposed so as not to overlap the gate signal generating circuit.
According to claim 1,
The first conductive layer has a resistance value of 10 ⁶ to 10 ⁹ Ω.
According to claim 1,
A ground line is disposed on the lower substrate, and the first conductive layer is connected to the ground line through a conductive ball.
According to claim 1,
and a second conductive layer connected to the first conductive layer at a position overlapping the gate signal generating circuit on the upper surface of the upper substrate and having a thickness different from that of the first conductive layer.
5. The method of claim 4,
A thickness of the second conductive layer is thinner than a thickness of the first conductive layer.
5. The method of claim 4,
A thickness of the second conductive layer is greater than a thickness of the first conductive layer.
According to claim 1,
A black spacer is disposed in the non-display area, and a column spacer is disposed at a position overlapping the black spacer.
a lower substrate divided into a display area and a non-display area, a touch sensor disposed at a position corresponding to the display area on an upper surface and a first polarizing plate disposed on a lower surface;
an upper substrate disposed to face the lower substrate, a second polarizing plate disposed on an upper surface and a color filter disposed on a lower surface; and
Including a plurality of printed circuit films connected to the lower substrate,
A first conductive layer is formed between the upper surface of the upper substrate and the second polarizing plate, and the first conductive layer is disposed so as not to overlap between the plurality of printed circuit films adjacent to each other.
9. The method of claim 8,
The first conductive layer has a resistance value of 10 ⁶ to 10 ⁹ Ω.
9. The method of claim 8,
A ground line is disposed on the lower substrate, and the first conductive layer is connected to the ground line through a conductive ball.
9. The method of claim 8,
A second conductive layer having a resistance value different from that of the first conductive layer is disposed on the upper surface of the upper substrate to overlap the non-display area, and the second conductive layer is connected to the first conductive layer.
12. The method of claim 11,
A thickness of the second conductive layer is thinner than a thickness of the first conductive layer.
12. The method of claim 11,
A thickness of the second conductive layer is greater than a thickness of the first conductive layer.
9. The method of claim 8,
A display device in which a black spacer is disposed in the non-display area and a column spacer is disposed at a position overlapping the black spacer
In a method of manufacturing a display device in which a lower substrate and an upper substrate are disposed to face each other,
disposing a first conductive film on the upper surface of the upper substrate;
removing a portion of the first conductive layer from the upper substrate by applying a photo-photo process and an etching process to the first conductive layer;
disposing a column spacer on the upper substrate; and
and disposing a color filter on a lower surface of the upper substrate.
16. The method of claim 15,
The method of manufacturing a display device, wherein the first conductive layer is formed by implanting tin oxide (SnO2) or zirconium oxide (ZrO2) as a dopant based on indium tin oxide (ITO).
16. The method of claim 15,
In the step of removing a portion of the first conductive layer from the upper substrate, in the non-display area among the display area and the non-display area disposed around the display area, the gate driver circuit disposed on the lower substrate or the lower substrate A method of manufacturing a display device in which the first conductive film is removed so as not to overlap with a connected printed circuit film.
18. The method of claim 17,
A method of manufacturing a display device wherein a portion of the first conductive layer is removed so that the thickness of the first conductive layer in the display area is greater than that of the first conductive layer in the non-display area.
18. The method of claim 17,
A portion of the first conductive layer is removed so that the thickness of the first conductive layer in the display area is thinner than the thickness of the first conductive layer in the non-display area.
16. The method of claim 15,
A gate signal generating circuit or a printed circuit film is connected to the non-display area, and the first conductive layer is disposed so as not to overlap the gate signal generating circuit or the printed circuit film.

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